The best thing i like about bitcoin is its enormous potential to grow. Bitcoin can reach upto any price in near future. I accumulated most of my bitcoins when the price was at 450 usd, so I am sitting on to a huge profit just by holding the bitcoins.
For me, the best about bitcoin is of its fast transaction online. It is reliable because it proves that making money online is real. It makes the things impossible to possible just like a miracle. Its not only that, the are more benefits that bitcoin given to us. And I like the decentralization property of bitcoin, as it is not belong to any one or any country but can be use in all over the world having same value. then anonymous property of bitcoin is also  the beauty of bitcoin.